Company Filing History:
Years Active: 1983
Title: Innovations of Tokio Okoshi
Introduction
Tokio Okoshi is a notable inventor based in Hitachi, Japan. He has made significant contributions to the field of materials science, particularly in the development of electrically insulating substrates. His work has implications for various applications in electronics and engineering.
Latest Patents
Okoshi holds a patent for an "Electrically insulating substrate and a method of making such a substrate." This invention involves adding from 0.1 to 3.5% by weight of beryllium oxide powder to silicon carbide powder, which contains minimal amounts of aluminum, boron, and free carbon. The mixed powder is pressure-molded and subsequently heated to temperatures between 1,850°C and 2,500°C. The result is a sintered body with at least 90% relative density of silicon carbide, thermal conductivity of at least 0.4 cal/cm.sec.°C at 25°C, electrical resistivity of at least 10^7 Ohm.cm at 25°C, and a coefficient of thermal expansion of 3.3 to 4 x 10^-6 /°C from 25°C to 300°C.
Career Highlights
Tokio Okoshi is associated with Hitachi, Ltd., a leading company in technology and innovation. His work at Hitachi has allowed him to focus on advanced materials and their applications in various industries.
Collaborations
Okoshi has collaborated with notable colleagues such as Yasuo Matsushita and Yukio Takeda. Their combined expertise has contributed to the advancement of technology in their respective fields.
Conclusion
Tokio Okoshi's innovative work in the development of electrically insulating substrates showcases his significant contributions to materials science. His patent reflects a deep understanding of material properties and their applications in technology.